Home / 709,728,952.74-979,423,531.92-392,180,353.56

Finding the Fourth Proportional to 709,728,952.74, 979,423,531.92 and 392,180,353.56

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Solution

The fourth proportional to 709,728,952.74, 979,423,531.92 and 392,180,353.56 is: 541,207,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,728,952.74 : 979,423,531.92 = 392,180,353.56 : x
  2. Step 2: Convert to fraction form
    709,728,952.74/979,423,531.92 = 392,180,353.56/x
  3. Step 3: Cross multiply
    709,728,952.74x = 979,423,531.92 × 392,180,353.56
  4. Step 4: Simplify right side
    709,728,952.74x = 384,110,667,032,271,424
  5. Step 5: Solve for x
    x = 384,110,667,032,271,424/709,728,952.74
  6. Step 6: Final answer
    x = 541,207,549.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.